CN101123760A - Implementation method for traditional group call triangle positioning in digital cluster communication system - Google Patents

Implementation method for traditional group call triangle positioning in digital cluster communication system Download PDF

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Publication number
CN101123760A
CN101123760A CNA2006101097974A CN200610109797A CN101123760A CN 101123760 A CN101123760 A CN 101123760A CN A2006101097974 A CNA2006101097974 A CN A2006101097974A CN 200610109797 A CN200610109797 A CN 200610109797A CN 101123760 A CN101123760 A CN 101123760A
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China
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epn
base station
terminal
reports
upper layer
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CNA2006101097974A
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CN101123760B (en
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杜浩存
余媛芳
曾奕
侯晓霞
朱芳宇
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ZTE Corp
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ZTE Corp
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Priority to CN2006101097974A priority Critical patent/CN101123760B/en
Priority to PCT/CN2006/003687 priority patent/WO2008019539A1/en
Publication of CN101123760A publication Critical patent/CN101123760A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention discloses a realization method for traditional group calling triangular positioning of a digital cluster communication system in the light of the problem that the triangular positioning business cannot obtain correct EPN under the condition that the preceding reversion channel of the existing PTT traditional group cluster system is shared. The invention comprises the following steps: (1) a base station receives PTT traditional group calling business message from a terminal and the bottom of the base station reports a PN and a EPN of the terminal collected by a chip to the upper application of the base station; (2) the upper application of the base station calculates target unidirectional relay or service unidirectional relay of the terminal according to the PN and the EPN and reports to a network lateral positioning center to calculate the position of the terminal. The invention dissolves the problems that correct EPN cannot be obtained when the preceding reversion channel of traditional group calling digital cluster system is shared, realizes accurate positioning of the mobile terminal, and is applicable for the existing cluster system.

Description

The implementation method of digital clustering communication system traditional group call triangle location
Technical field
The present invention relates to moving communicating field, in based on trunked communication system, add location technology, in the conventional group calling digital clustering communication system, realize method the specific user location.
Background technology
Digital clustering communication system is a kind of system that mobile dispatch service can be provided to specialty or public users, is representing the developing direction of specialized mobile radio net.The conventional group calling group system has characteristics such as Channel Sharing, single contained fan limitless volumes.In present existing locate mode, GPS-One, GPS location technology need the support of special terminal chip, and requiring to change new model terminal could realize.
The handling process of triangle location is: utilize the centre of location (MPC:Mobile Position Center) to the measurement request report of base station initiation to the position of certain terminal, the base station is sent wireless position to the terminal of conversing and is measured request, terminal receives that measuring the request back gives the base station pilot report in active set of self and the Candidate Set, if end under the covering of a plurality of base stations in, just can calculate the concrete geographical position of terminal by the information of terminal report, reach the requirement of locating terminal.
EPN (Earliest PN offset) is an important parameter of using in the triangle navigation system, by EPN, can calculate target one-way latency, the service one-way latency of terminal to some base stations, reports the position of network side computing terminal.In present existing other business, the corresponding terminal of channel, the acquisition of EPN periodically reports by channel board, and the cycle is very short, and EPN may have fluctuation, but can be very not big.
The conventional group calling business is an expansion of PTT (Push To Talk) group-calling service, is used to solve the restriction on the former group-calling service air capacity, realizes all user's communications in conventional group calling promoter and the group.The principal character of conventional group calling business function: single contained fan limitless volumes and forward channel are shared.
Single contained fan limitless volumes, single contained fan are supported single group group calling limitless volumes down, and be not limited to each sector group user capacity that places an order, can utilize Limited resources, particularly Radio Resource is supported in and is in an emergency the functions such as command scheduling under the concentrated condition of user; Under same sector in the group number of users what to not influencing turn-on time.
Forward channel is shared, in order to reach the purpose that group user is shared in forward channel, shared Traffic Channel has identical Walsh sign indicating number, frame biasing and Long Code Mask, and the traffic frame content of synchronization is identical, must increase the transmission of relevant parameter on signaling process.Forward link is shared a forward direction voice channel in the group; In the group, the user under the same contained fan shares a forward signaling channel; Directly distribute the cell channel resource by broadcast channel assigned message, terminal is directly set up respective channel, does not need to shake hands and service negotiation with the base station signaling, improves the access and the switch speed of terminal with this; Reverse link, reverse link can only have a user to speak simultaneously, say that the user monopolizes reverse voice channel; In the group, the following tin user of same contained fan shares a reverse signalling channel, and the backward signaling transmission is adopted and sent strategy at random.
In the PTT conventional group calling, obtaining also of EPN will report by channel board, but because preceding backward channel is shared, a plurality of terminals are shared same channel, terminal is corresponding no longer one by one with channel, if take traditional way of obtaining EPN like this, periodically report by channel board, the EPN of so a certain moment channel blackboard newspaper may be terminal A, but the EPN of another moment channel blackboard newspaper may be again terminal B, because terminal A and terminal B geographical position may fall far short, like this, it can be to can not get correct EPN's very greatly that EPN changes.EPN obtains inaccurate, the precision of the position that direct influence is finally calculated.
Summary of the invention
At defective and the deficiency that prior art exists, the invention provides under a kind of situation that backward channel is shared before PTT conventional group calling group system, in the triangle positioning service, obtain the implementation method of the group system traditional group call triangle location of correct EPN.
In order to reach the foregoing invention purpose, the implementation method of digital clustering communication system traditional group call triangle of the present invention location is characterized in that: may further comprise the steps:
(1) the PTT conventional group calling service message of self terminal is received in the base station, and the base station bottom reports to the base station upper layer application to the PN of this terminal and EPN;
(2) the base station upper layer application calculates the target one-way latency of described terminal or serves one-way latency according to described PN and EPN, reports the network side centre of location, calculates the position of described terminal.
In the implementation method of above-mentioned digital clustering communication system traditional group call triangle location, the PTT conventional group calling service message described in the step (1) is that the power level of listening the user to send is measured message, messages sent by users in other words.
In the implementation method of above-mentioned digital clustering communication system traditional group call triangle location, described step (2) may further comprise the steps:
(21) the upper layer application PN that reports by bottom in base station judges that whether the EPN corresponding with this PN that bottom reports be with reference to PN, if, execution in step (22); If not, execution in step (23);
(22) the base station upper layer application calculates the service one-way latency of described terminal, reports the network side centre of location to calculate the position of described terminal, and step finishes;
(23) the base station upper layer application calculates described EPN with reference to PN according to existing PN and the EPN that reports with reference to PN and bottom, and then calculates the target one-way latency of described terminal, reports the network side centre of location to calculate the position of described terminal, and step finishes.
In the implementation method of above-mentioned digital clustering communication system traditional group call triangle location, described step (21) is specially: the PN value that base station upper layer application comparison bottom reports and with reference to the PN value, if the two equates, then the EPN corresponding with this PN that report of bottom is the EPN with reference to PN, execution in step (22); Otherwise, execution in step (23).
Obtain the inaccurate problem of EPN when backward channel is shared before the invention solves in the conventional group calling digital cluster system, realized the accurate location of portable terminal, so that carry out various cluster positioning services.
Description of drawings
Fig. 1 arrives the terminal flow chart for the PTT dispatch server;
Fig. 2 arrives PTT dispatch server flow chart for terminal;
Fig. 3 is the process chart of base station bottom;
Fig. 4 is the process chart of base station upper layer application.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing:
Technical scheme of the present invention is: after the base station bottom is received the air-interface information that terminal sends, judge if listen the user and be PSMM (power level measurement) message that just PN that chip is collected and EPN add to and report to upper layer application in the message; If say the user, just PN that chip is collected and EPN add to and report to upper layer application in the message.After upper layer application is received and measured response message, judge EPN, just directly report the service one-way latency if with reference to PN, if not, then to extrapolate EPN according to the EPN that chip collects with reference to PN, calculate the target one-way latency again.
Concrete steps of the present invention can comprise:
Step 1; Bottom judges if listen the user and be PSMM message, and just PN that chip is collected and EPN add to and report to upper layer application in the message, enter step 3; Otherwise changing step 2 over to handles;
Step 2: bottom judges if say the user, and just PN that chip is collected and EPN add to and report to upper layer application in the message;
Step 3: after upper layer application is received the message that bottom reports, whether the EPN that judges the bottom newspaper is with reference to PN's, if, utilize prior art to calculate the service one-way latency, report to the colony dispatching station server through colony dispatching platform client, calculate the position of terminal for the network side centre of location; If not, change step 4 over to;
Step 4: upper layer application judges that the EPN of bottom newspaper is not with reference to PN, EPN, the PN that reports according to current bottom and with reference to PN, can calculate EPN ', calculate the target one-way latency, report to the colony dispatching station server through colony dispatching platform client with reference to PN.Calculate the position of terminal for the network side centre of location.
Fig. 1, Fig. 2 have illustrated the triangle positioning flow, and Fig. 3, Fig. 4 have illustrated that inside of base station obtains the processing procedure of EPN and relevant parameter calculating.
Fig. 1 may further comprise the steps:
101, the message that the colony dispatching station server sends is received by colony dispatching platform client in the base station;
102, whether be wireless position measurement request message in the base station if detecting this message according to type of message, if not the wireless position measurement request message, changes step 103; If the wireless position measurement request message is changeed step 104;
103, the processing of corresponding message is carried out in the base station according to its type of message;
104, the legitimacy of this message is detected in the base station; If this message is wrong, change step 105; Otherwise change step 106;
105, the base station to colony dispatching station server return messages, is with cause value through colony dispatching platform client in the message;
106, this message is normal, and the base station sends to mobile phone by air interface with the wireless position measurement request message.
Fig. 2 may further comprise the steps:
201, the message that terminal is sent is received by air interface in the base station;
202, the base station judges whether to be the PTT conventional group calling and to be localization message, if change step 203; Otherwise change step 207;
203, the base station judges whether this message is the wireless measurement response message; If not, change step 204; Otherwise change step 205;
204, the processing of corresponding message is carried out in the base station according to its type of message;
205, the target one-way latency is calculated in the base station, changes step 206;
206, structure wireless position in base station is measured response message, issues the PTT dispatch server through the PTT dispatching client, calculates the position of mobile phone for network side;
207, finish.
Fig. 3 may further comprise the steps:
301, bottom is received the message that terminal is sent from air interface;
302, bottom judges whether it is PTT conventional group calling business, if change step 303; If not, change step 307;
303, bottom judges whether to be to listen the user and to be PSMM message.If change step 304; If not, change step 305;
304, bottom writes EPN, PN and reports to upper layer application in the PSMM message and change step 307;
305, bottom judges it is to say user message, if change step 306; Otherwise change step 307;
306, bottom is filled in EPN, PN at segmentation signaling first frame and is reported to upper layer application and change step 307;
307, bottom layer treatment finishes.
Fig. 4 may further comprise the steps:
401, upper layer application is received the message that bottom reports;
402, upper layer application judges whether to be conventional group calling and to be localization message, if change step 403; Otherwise change step 408;
403, whether upper layer application equates with RefPN (with reference to PN) by the PN that judges bottom and report, determine that bottom reports with the corresponding EPN of this PN whether be EPN with reference to PN, if change step 404; Otherwise change step 405;
404, upper layer application calculates the service one-way latency changes step 407;
405, upper layer application calculates the EPN of reference pilot and changes step 406 according to the EPN that gathers;
406, upper layer application calculates the target one-way latency changes step 407;
407, upper layer application structure wireless measurement position response message is issued the PTT dispatch server through the PTT dispatching client, calculates the position of terminal for network side;
408, finish.

Claims (4)

1. the implementation method of digital clustering communication system traditional group call triangle location is characterized in that: may further comprise the steps:
(1) the PTT conventional group calling service message of self terminal is received in the base station, and the base station bottom reports to the base station upper layer application to the PN and the EPN of this terminal that chip collects;
(2) the base station upper layer application calculates the target one-way latency of described terminal or serves one-way latency according to described PN and EPN, reports the network side centre of location, calculates the position of described terminal.
2. the implementation method of digital clustering communication system traditional group call triangle according to claim 1 location is characterized in that: the PTT conventional group calling service message described in the step (1) is that the power level of listening the user to send is measured message or said messages sent by users.
3. the implementation method of digital clustering communication system traditional group call triangle according to claim 1 location, it is characterized in that: described step (2) may further comprise the steps:
(21) the upper layer application PN that reports by bottom in base station judges that whether the EPN corresponding with this PN that bottom reports be with reference to PN, if, execution in step (22); If not, execution in step (23);
(22) the base station upper layer application calculates the service one-way latency of described terminal, reports the network side centre of location to calculate the position of described terminal, and step finishes;
(23) the base station upper layer application calculates described EPN with reference to PN according to existing PN and the EPN that reports with reference to PN and bottom, and then calculates the target one-way latency of described terminal, reports the network side centre of location to calculate the position of described terminal, and step finishes.
4. the implementation method of digital clustering communication system traditional group call triangle according to claim 3 location, it is characterized in that: described step (21) is specially: the PN value that base station upper layer application comparison bottom reports and with reference to the PN value, if the two equates, then the EPN corresponding with this PN that report of bottom is the EPN with reference to PN, execution in step (22); Otherwise, execution in step (23).
CN2006101097974A 2006-08-11 2006-08-11 Implementation method for traditional group call triangle positioning in digital cluster communication system Expired - Fee Related CN101123760B (en)

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CN2006101097974A CN101123760B (en) 2006-08-11 2006-08-11 Implementation method for traditional group call triangle positioning in digital cluster communication system
PCT/CN2006/003687 WO2008019539A1 (en) 2006-08-11 2006-12-29 Method for realizing triangle locating of traditional group call in digital ptt telecommunication system

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Cited By (3)

* Cited by examiner, † Cited by third party
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CN101931861A (en) * 2009-06-19 2010-12-29 中兴通讯股份有限公司 System and method for transmitting location protocol
CN102523595A (en) * 2011-12-02 2012-06-27 中兴通讯股份有限公司 Method and device for detecting reverse search window center in cluster system
CN103079267A (en) * 2012-12-28 2013-05-01 东方通信股份有限公司 Method for quickly reporting position information of terminals in digital cluster communication system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100378124B1 (en) * 1998-12-10 2003-06-19 삼성전자주식회사 Device and method for estimating the position of terminal in mobile communication system
US7420947B2 (en) * 2002-08-30 2008-09-02 Qualcomm Incorporated Communication system performance using position location information
CN100388819C (en) * 2004-11-18 2008-05-14 中兴通讯股份有限公司 Grouped system and method for realizing position
CN100406908C (en) * 2004-12-28 2008-07-30 中兴通讯股份有限公司 Method and system for calculating position based on triangle positioning of forwarding chain in high rank

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101931861A (en) * 2009-06-19 2010-12-29 中兴通讯股份有限公司 System and method for transmitting location protocol
CN101931861B (en) * 2009-06-19 2014-10-22 中兴通讯股份有限公司 System and method for transmitting location protocol
CN102523595A (en) * 2011-12-02 2012-06-27 中兴通讯股份有限公司 Method and device for detecting reverse search window center in cluster system
WO2013078815A1 (en) * 2011-12-02 2013-06-06 中兴通讯股份有限公司 Method and device for detecting reverse search window center in cluster system
CN102523595B (en) * 2011-12-02 2017-08-01 南京中兴软件有限责任公司 A kind of detection method and device of reverse search window center in cluster system
CN103079267A (en) * 2012-12-28 2013-05-01 东方通信股份有限公司 Method for quickly reporting position information of terminals in digital cluster communication system
CN103079267B (en) * 2012-12-28 2016-07-06 东方通信股份有限公司 A kind of in digital clustering communication system quick reporting terminal positional information realize method

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